Package elki.index.tree.spatial.rstarvariants.deliclu

Class DeLiCluTree

java.lang.Object

elki.index.tree.IndexTree<N,E>

elki.index.tree.spatial.rstarvariants.AbstractRStarTree<N,E,S>

elki.index.tree.spatial.rstarvariants.NonFlatRStarTree<DeLiCluNode,DeLiCluEntry,RTreeSettings>

elki.index.tree.spatial.rstarvariants.deliclu.DeLiCluTree

All Implemented Interfaces:

Index

Direct Known Subclasses:

DeLiCluTreeIndex

public abstract class DeLiCluTree
extends NonFlatRStarTree<DeLiCluNode,DeLiCluEntry,RTreeSettings>

DeLiCluTree is a spatial index structure based on an R-Tree. DeLiCluTree is designed for the DeLiClu algorithm, having in each node a boolean array which indicates whether the child nodes are already handled by the DeLiClu algorithm.

Since:

0.1

Author:

Elke Achtert

Nested Class Summary

Nested classes/interfaces inherited from class elki.index.tree.spatial.rstarvariants.AbstractRStarTree

AbstractRStarTree.Statistics

Field Summary

Fields

Modifier and Type	Field	Description
private it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap<it.unimi.dsi.fastutil.ints.IntSet>	expanded	Holds the ids of the expanded nodes.
private static Logging	LOG	The logger for this class.

Fields inherited from class elki.index.tree.spatial.rstarvariants.AbstractRStarTree

EXTRA_INTEGRITY_CHECKS, height, settings, statistics

Fields inherited from class elki.index.tree.IndexTree

dirCapacity, dirMinimum, initialized, leafCapacity, leafMinimum

Constructor Summary

Constructors

Constructor	Description
DeLiCluTree(PageFile<DeLiCluNode> pagefile, RTreeSettings settings)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected DeLiCluEntry	createNewDirectoryEntry(DeLiCluNode node)	Creates a new directory entry representing the specified node.
protected DeLiCluNode	createNewDirectoryNode()	Creates a new directory node with the specified capacity.
protected DeLiCluNode	createNewLeafNode()	Creates a new leaf node with the specified capacity.
protected DeLiCluEntry	createRootEntry()	Creates an entry representing the root node.
it.unimi.dsi.fastutil.ints.IntSet	getExpanded(DeLiCluEntry entry)	Returns the nodes which are already expanded with the specified node.
it.unimi.dsi.fastutil.ints.IntSet	getExpanded(DeLiCluNode entry)	Returns the nodes which are already expanded with the specified node.
protected Logging	getLogger()	Get the (STATIC) logger for this class.
void	setExpanded(DeLiCluEntry entry1, DeLiCluEntry entry2)	Marks the nodes with the specified ids as expanded.

Methods inherited from class elki.index.tree.spatial.rstarvariants.NonFlatRStarTree

bulkLoad, computeHeight, createEmptyRoot, hasOverflow, hasUnderflow

Methods inherited from class elki.index.tree.spatial.rstarvariants.AbstractRStarTree

adjustTree, canBulkLoad, choosePath, containedTest, createBulkLeafNodes, createNewRoot, deletePath, doExtraIntegrityChecks, findPathToObject, getHeight, getLeaves, initializeCapacities, initializeFromFile, insertEntry, insertLeaf, logStatistics, reInsert, setHeight, toString

Methods inherited from class elki.index.tree.IndexTree

createHeader, deleteNode, getFile, getNode, getNode, getPageID, getPageSize, getRootEntry, getRootID, getRootPath, initialize, initialize, isRoot, postDelete, preInsert, writeNode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LOG

private static final Logging LOG

The logger for this class.

expanded

private it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap<it.unimi.dsi.fastutil.ints.IntSet> expanded

Holds the ids of the expanded nodes.

Constructor Detail

DeLiCluTree

public DeLiCluTree(PageFile<DeLiCluNode> pagefile,
                   RTreeSettings settings)

Constructor.

Parameters:

pagefile - Page file

settings - Settings

Method Detail

setExpanded

public void setExpanded(DeLiCluEntry entry1,
                        DeLiCluEntry entry2)

Marks the nodes with the specified ids as expanded.

Parameters:

entry1 - the first node

entry2 - the second node

getExpanded

public it.unimi.dsi.fastutil.ints.IntSet getExpanded(DeLiCluEntry entry)

Returns the nodes which are already expanded with the specified node.

Parameters:

entry - the id of the node for which the expansions should be returned

Returns:

the nodes which are already expanded with the specified node

getExpanded

public it.unimi.dsi.fastutil.ints.IntSet getExpanded(DeLiCluNode entry)

Returns the nodes which are already expanded with the specified node.

Parameters:

entry - the id of the node for which the expansions should be returned

Returns:

the nodes which are already expanded with the specified node

createNewLeafNode

protected DeLiCluNode createNewLeafNode()

Creates a new leaf node with the specified capacity.

Specified by:

createNewLeafNode in class IndexTree<DeLiCluNode,DeLiCluEntry>

Returns:

a new leaf node

createNewDirectoryNode

protected DeLiCluNode createNewDirectoryNode()

Creates a new directory node with the specified capacity.

Specified by:

createNewDirectoryNode in class IndexTree<DeLiCluNode,DeLiCluEntry>

Returns:

a new directory node

createNewDirectoryEntry

protected DeLiCluEntry createNewDirectoryEntry(DeLiCluNode node)

Creates a new directory entry representing the specified node.

Specified by:

createNewDirectoryEntry in class AbstractRStarTree<DeLiCluNode,DeLiCluEntry,RTreeSettings>

Parameters:

node - the node to be represented by the new entry

Returns:

the newly created directory entry

createRootEntry

protected DeLiCluEntry createRootEntry()

Creates an entry representing the root node.

Specified by:

createRootEntry in class IndexTree<DeLiCluNode,DeLiCluEntry>

Returns:

an entry representing the root node

getLogger

protected Logging getLogger()

Description copied from class: IndexTree

Get the (STATIC) logger for this class.

Specified by:

getLogger in class IndexTree<DeLiCluNode,DeLiCluEntry>

Returns:

the static logger